cxgb4: collect ASIC LA dumps from ULP TX

Signed-off-by: Surendra Mobiya <[email protected]>
Signed-off-by: Rahul Lakkireddy <[email protected]>
Signed-off-by: Ganesh Goudar <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: Surendra Mobiya

drivers/net/ethernet/chelsio/cxgb4/cudbg_entity.h

@@ -281,12 +281,18 @@ struct cudbg_tid_data {
 
 #define CUDBG_NUM_ULPTX 11
 #define CUDBG_NUM_ULPTX_READ 512
+#define CUDBG_NUM_ULPTX_ASIC 6
+#define CUDBG_NUM_ULPTX_ASIC_READ 128
+
+#define CUDBG_ULPTX_LA_REV 1
 
 struct cudbg_ulptx_la {
 	u32 rdptr[CUDBG_NUM_ULPTX];
 	u32 wrptr[CUDBG_NUM_ULPTX];
 	u32 rddata[CUDBG_NUM_ULPTX];
 	u32 rd_data[CUDBG_NUM_ULPTX][CUDBG_NUM_ULPTX_READ];
+	u32 rdptr_asic[CUDBG_NUM_ULPTX_ASIC_READ];
+	u32 rddata_asic[CUDBG_NUM_ULPTX_ASIC_READ][CUDBG_NUM_ULPTX_ASIC];
 };
 
 #define CUDBG_CHAC_PBT_ADDR 0x2800

drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c

@@ -2586,15 +2586,24 @@ int cudbg_collect_ulptx_la(struct cudbg_init *pdbg_init,
 	struct adapter *padap = pdbg_init->adap;
 	struct cudbg_buffer temp_buff = { 0 };
 	struct cudbg_ulptx_la *ulptx_la_buff;
+	struct cudbg_ver_hdr *ver_hdr;
 	u32 i, j;
 	int rc;
 
-	rc = cudbg_get_buff(pdbg_init, dbg_buff, sizeof(struct cudbg_ulptx_la),
+	rc = cudbg_get_buff(pdbg_init, dbg_buff,
+			    sizeof(struct cudbg_ver_hdr) +
+			    sizeof(struct cudbg_ulptx_la),
 			    &temp_buff);
 	if (rc)
 		return rc;
 
-	ulptx_la_buff = (struct cudbg_ulptx_la *)temp_buff.data;
+	ver_hdr = (struct cudbg_ver_hdr *)temp_buff.data;
+	ver_hdr->signature = CUDBG_ENTITY_SIGNATURE;
+	ver_hdr->revision = CUDBG_ULPTX_LA_REV;
+	ver_hdr->size = sizeof(struct cudbg_ulptx_la);
+
+	ulptx_la_buff = (struct cudbg_ulptx_la *)(temp_buff.data +
+						  sizeof(*ver_hdr));
 	for (i = 0; i < CUDBG_NUM_ULPTX; i++) {
 		ulptx_la_buff->rdptr[i] = t4_read_reg(padap,
 						      ULP_TX_LA_RDPTR_0_A +
@@ -2610,6 +2619,25 @@ int cudbg_collect_ulptx_la(struct cudbg_init *pdbg_init,
 				t4_read_reg(padap,
 					    ULP_TX_LA_RDDATA_0_A + 0x10 * i);
 	}
+
+	for (i = 0; i < CUDBG_NUM_ULPTX_ASIC_READ; i++) {
+		t4_write_reg(padap, ULP_TX_ASIC_DEBUG_CTRL_A, 0x1);
+		ulptx_la_buff->rdptr_asic[i] =
+				t4_read_reg(padap, ULP_TX_ASIC_DEBUG_CTRL_A);
+		ulptx_la_buff->rddata_asic[i][0] =
+				t4_read_reg(padap, ULP_TX_ASIC_DEBUG_0_A);
+		ulptx_la_buff->rddata_asic[i][1] =
+				t4_read_reg(padap, ULP_TX_ASIC_DEBUG_1_A);
+		ulptx_la_buff->rddata_asic[i][2] =
+				t4_read_reg(padap, ULP_TX_ASIC_DEBUG_2_A);
+		ulptx_la_buff->rddata_asic[i][3] =
+				t4_read_reg(padap, ULP_TX_ASIC_DEBUG_3_A);
+		ulptx_la_buff->rddata_asic[i][4] =
+				t4_read_reg(padap, ULP_TX_ASIC_DEBUG_4_A);
+		ulptx_la_buff->rddata_asic[i][5] =
+				t4_read_reg(padap, PM_RX_BASE_ADDR);
+	}
+
 	return cudbg_write_and_release_buff(pdbg_init, &temp_buff, dbg_buff);
 }
 

drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c

@@ -273,7 +273,8 @@ static u32 cxgb4_get_entity_length(struct adapter *adap, u32 entity)
 		}
 		break;
 	case CUDBG_ULPTX_LA:
-		len = sizeof(struct cudbg_ulptx_la);
+		len = sizeof(struct cudbg_ver_hdr) +
+		      sizeof(struct cudbg_ulptx_la);
 		break;
 	case CUDBG_UP_CIM_INDIRECT:
 		n = 0;

drivers/net/ethernet/chelsio/cxgb4/t4_regs.h

@@ -1683,6 +1683,16 @@
 #define ULP_TX_LA_RDPTR_0_A 0x8ec0
 #define ULP_TX_LA_RDDATA_0_A 0x8ec4
 #define ULP_TX_LA_WRPTR_0_A 0x8ec8
+#define ULP_TX_ASIC_DEBUG_CTRL_A 0x8f70
+
+#define ULP_TX_ASIC_DEBUG_0_A 0x8f74
+#define ULP_TX_ASIC_DEBUG_1_A 0x8f78
+#define ULP_TX_ASIC_DEBUG_2_A 0x8f7c
+#define ULP_TX_ASIC_DEBUG_3_A 0x8f80
+#define ULP_TX_ASIC_DEBUG_4_A 0x8f84
+
+/* registers for module PM_RX */
+#define PM_RX_BASE_ADDR 0x8fc0
 
 #define PMRX_E_PCMD_PAR_ERROR_S    0
 #define PMRX_E_PCMD_PAR_ERROR_V(x) ((x) << PMRX_E_PCMD_PAR_ERROR_S)